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  • Extraction Process of Antimony from Stibnite by ...

    A low-temperature and sulfur-fixing smelting process was applied to separate antimony from stibnite. The results show that the direct recovery rate of Sb is 90% (mass fraction), and the grade of ...

  • antimony volatilization methods - amazicard.co.za

    Jul 7, 2016 . Under the optimum conditions, the direct recovery rate of antimony can reach . most of antimony smelteries in China use traditional volatilization . Methods. As an experimental procedure, 100 g stibnite concentrate were.

  • Extraction Process of Antimony from Stibnite by ...

    Feb 13, 2019  While the stibnite concentrated content is 75% (mass fraction, similarly hereinafter), FeO content is 16%, CaO content is 16%, the volatilization time is 60 min, the volatilization temperature is 1673 K, low melting point slagging and non-blowing operation are necessary, the primary volatilization rate of antimony from stibnite concentrate is ...

  • Author: Dongbo Li, Xiaohua Yang
  • Antimony(V) volatilization with bromide and determination ...

    This method demonstrated that the chemical volatilization of antimony(V) with bromide can be used as a reliable gas sample introduction method in ICP-AES. The Sb(V) determination, by this method, presents the following advantages: • With a discrete sample injection, its LD is in the order of ICP-AES methods with continuous pneumatic ...

  • Cited by: 11
  • Antimony(V) volatilization with bromide and determination ...

    Antimony(V) is volatilized by reaction with potassium bromide in concentrated sulfuric acid media. After volatilization, the gases can be transported to an inductively coupled plasma spectrometer ...

  • Fungal volatilization of arsenic and antimony and the ...

    1 Introduction. Toxic gases resulting from the biological volatilization of group Vb elements (phosphorus, arsenic and antimony) have been implicated in sudden infant death syndrome (SIDS) [].Antimony, the element attracting most attention, is present primarily as a fire retardant in PVC used to make mattress covers [2, 3].Also, it has been suggested that phosphorus, widely present in natural ...

  • US20150259216A1 - Method for producing antimony trisulfide ...

    A method for producing antimony trisulfide can inexpensively produce antimony trisulfide that has a relatively low content of lead, arsenic, and crystalline silica (i.e., impurities). The method includes charging a reaction vessel with an antimony trioxide powder and sulfur, and heating the inside of the reaction vessel to react antimony trioxide with sulfur.

  • Sustainable phase-conversion method for antimony ...

    May 07, 2020  1. Introduction. At present, most antimony smelters still adopt the volatilization process in blast furnace to extract antimony trioxide (Froehlich et al., 2017), and reduce it by coke in a reverberatory furnace to metallic antimony (Anderson, 2012).This process chain, however, has drawbacks, such as low efficiency, high energy consumption (around 3.6 × 10 7 kJ/t Sb) and high

  • The exposure to and health effects of antimony

    INTRODUCTION. Antimony (Sb) (atomic number 51; atomic mass 121.75 g/mol; density 6.684 g/cm 3; melting point 631°C) occurs naturally as a sulphide ore, stibnite (Sb 2 S 3) and valentinite (Sb 2 0 3).The traditional method of treating the ore is to roast it with charcoal or coke and collect the volatile oxide fume (Sb 4 O 6) from which pure antimony is refined.[]

  • Ilitch Moscoso Lazo - Universidad de Concepción - Chile ...

    The classical method for the pretreatment of dirty copper concentrates is partial oxidizing roasting, where the impurities are eliminated through the gas phase. However, volatilization of antimony and bismuth in conventional roasting processes using air or oxygen-deficient air is hardly achieved since antimony and bismuth remain in the calcine ...

  • 职位: Magíster en Mineralogía Aplicada
  • Sustainable phase-conversion method for antimony ...

    May 07, 2020  1. Introduction. At present, most antimony smelters still adopt the volatilization process in blast furnace to extract antimony trioxide (Froehlich et al., 2017), and reduce it by coke in a reverberatory furnace to metallic antimony (Anderson, 2012).This process chain, however, has drawbacks, such as low efficiency, high energy consumption (around 3.6 × 10 7 kJ/t Sb) and high

  • Antimony(V) volatilization with bromide and determination ...

    This method demonstrated that the chemical volatilization of antimony(V) with bromide can be used as a reliable gas sample introduction method in ICP-AES. The Sb(V) determination, by this method, presents the following advantages: • With a discrete sample injection, its LD is in the order of ICP-AES methods with continuous pneumatic ...

  • CN202532872U - Vertical volatilization furnace for ...

    The utility model discloses a vertical volatilization furnace for smelting antimony oxide powder, and relates to the field of smelting of antimony ore, in particular to a volatilization furnace for smelting antimony oxide powder with fire. The vertical volatilization furnace comprises a furnace body and a furnace wall; an automatic discharging device is arranged at the bottom of the furnace ...

  • Volatilization of in situ generated antimony trichloride ...

    Aug 29, 2007  Volatilization of Sb has been carried out using vapors generated from aqua regia for the determination of non-volatile impurities present in antimony. The antimony trichloride (SbCl3) thus generated was volatilized >99.9% at 250 degrees C in 90 min. Recoveries of spiked impurities Al, Mn, Co, Ni, Cu, Sr, Ag, Cd, Ba, Pb were found to be >90% (47 ...

  • Mercury and Antimony Troubleshooting - Inorganic Ventures

    Mercury and Antimony Troubleshooting. Advice by Paul Gaines, Ph.D. Wendy works at a radioactive treatment facility and wondered about using ICP-MS as a backup method for Hg analysis as compared to a FIMS instrument. Furthermore, Wendy noticed high background levels of Sb compared to her detection level when running antimony on her instrument ...

  • Recovery of Antimony: A Laboratory Study on the Thermal ...

    Antimony is typically classified as a volatile heavy metal, and low-grade ores are commonly produced by pyrometallurgical methods [20]. Industrially, reduction of antimony oxide to metallic antimony is achieved by heat-ing and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition

  • Microbial Methylation of Metalloids: Arsenic, Antimony ...

    Within the last few years, improved methods for the detection of small amounts of antimony and determination of antimony species have been published (58, 59, 78, 139, 144, 159-161). Antimony and SIDS Prior to the middle nineteen nineties there was little evidence for microbial methylation of antimony (

  • Separation and Recovery of Antimony from High Arsenic ...

    The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO 2, in which the arsenic was removed through a volatilization and antimony was oxidized to Sb 2 O 4 staying in the roasted products. In a certain range, the MnO 2 additive has an active effective on the arsenic volatilization for the reason that structures of some ...

  • Antimony Recovery from End-of-Life Products and Industrial ...

    Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from its use as flame retardant in plastics, coatings, and

  • Immobilization of antimony waste slag by applying ...

    methods, a considerable amount of slag containing antimony and other impurities is formed in the equipment such as the shaft furnace, rotary kiln, converter, or reverberatory furnace. According to the antimony production companies, 1 ton of antimony production results in the generation of approximately 4.5–5 tons of waste slag.

  • volatilization roasting techniques for antimony

    Roasting - an overview ScienceDirect Topics. The volatilization of arsenic As and antimony Sb impurities in a copper ore consisting of tennantite Cu 12 As 4 S 13 tetrahedrite Cu 12 Sb 4 S 13 by roasting in both nitrogen and air atmospheres was investigated in this study The roasting experiments were performed at different temperatures ranging from 500 to 1200°C and different retention times ...

  • Volatilization in Assaying

    Volatilization in Cupelling. The possible volatilization of the precious metals in cupelling is a most complex proposition. It may be due to the vapor pressure of the individual metals, the vapor pressure of alloys or possible metallic compounds, of compounds of metals with metalloids or with non-metals, particularly oxygen.

  • Method for vitrification of arsenic and antimony - Justia

    The method according to an embodiment of an aspect of the invention is described in relation to the flowchart of FIG. 1. Arsenic and antimony exist as thiosalts, i.e. thioarsenate (Na 3 AsS 4) or thiantimonate (Na 3 SbS 4) respectively, when crystallized from basic dissolution with sodium sulfide Na

  • Volatilization of arsenic(III, V), antimony(III, V), and ...

    Anal. Chem. All Publications/Website. OR SEARCH CITATIONS

  • Method for vitrification of arsenic and antimony - Justia

    The method according to an embodiment of an aspect of the invention is described in relation to the flowchart of FIG. 1. Arsenic and antimony exist as thiosalts, i.e. thioarsenate (Na 3 AsS 4) or thiantimonate (Na 3 SbS 4) respectively, when crystallized from basic dissolution with sodium sulfide Na

  • Volatilization of arsenic(III, V), antimony(III, V), and ...

    Anal. Chem. All Publications/Website. OR SEARCH CITATIONS

  • Microbial Methylation of Metalloids: Arsenic, Antimony ...

    Within the last few years, improved methods for the detection of small amounts of antimony and determination of antimony species have been published (58, 59, 78, 139, 144, 159-161). Antimony and SIDS Prior to the middle nineteen nineties there was little evidence for microbial methylation of antimony (

  • volatilization roasting techniques for antimony

    Roasting - an overview ScienceDirect Topics. The volatilization of arsenic As and antimony Sb impurities in a copper ore consisting of tennantite Cu 12 As 4 S 13 tetrahedrite Cu 12 Sb 4 S 13 by roasting in both nitrogen and air atmospheres was investigated in this study The roasting experiments were performed at different temperatures ranging from 500 to 1200°C and different retention times ...

  • Recovery of Antimony: A Laboratory Study on the Thermal ...

    Antimony is typically classified as a volatile heavy metal, and low-grade ores are commonly produced by pyrometallurgical methods [20]. Industrially, reduction of antimony oxide to metallic antimony is achieved by heat-ing and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition

  • Thermodynamic and kinetics analysis of the sulfur-fixed ...

    antimony is stibnite (Sb 2 S 3) and jamesonite (Pb 4 FeSb 6 S 14) [3-5]. The traditional method for the production of antimony is volatilization smelting followed by reduction smelting [6-7], which consists of two steps: oxidative volatilization of Sb 2 S 3 and reducing smelting of Sb 2 O 3 [8-9]. The reduction smelting is relatively mature and ...

  • Antimony - Properties and reactions Britannica

    Antimony - Antimony - Properties and reactions: The most stable form of elemental antimony is a brittle, silvery solid of high metallic lustre. Electrolytic deposition of antimony under certain conditions produces an unstable, amorphous form called “explosive antimony,” because, when bent or scratched, it will change in a mildly explosive manner to the more stable, metallic form.

  • Separation and Recovery of Antimony from High Arsenic ...

    The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO 2, in which the arsenic was removed through a volatilization and antimony was oxidized to Sb 2 O 4 staying in the roasted products. In a certain range, the MnO 2 additive has an active effective on the arsenic volatilization for the reason that structures of some ...

  • Immobilization of antimony waste slag by applying ...

    methods, a considerable amount of slag containing antimony and other impurities is formed in the equipment such as the shaft furnace, rotary kiln, converter, or reverberatory furnace. According to the antimony production companies, 1 ton of antimony production results in the generation of approximately 4.5–5 tons of waste slag.

  • KINETICS OF STIBNITE (S b S ) OXIDATION AT ROASTING ...

    oxidation-volatilization of this mineral at roasting or higher temperatures. On this matter, Komorova et al. [4] studied the vaporization of several antimony containing compounds, among them synthetic Sb 2 S 3, in nitrogen atmosphere using the transportation method. They found that in the temperature range of 600 °C to 824 °C, Sb 2 S 3 ...

  • Thermodynamics for arsenic and antimony in copper matte ...

    In this paper thermodynamic data for arsenic and antimony and their sulfide and oxide gases have been critically reviewed and compiled. The entropy values for AsS(g), SbS(g), and BiS(g) have been recalculated based on a statistical thermodynamic method. The standard heat of formation and entropy of As/sub 2/O/sub 3/(g) have been newly assessed.

  • Volatility and Vapor Pressure Measurements of Antimony and ...

    ration method with a vertical volatilization chamber. It was found that the volatility of the antimony and arsenic components in each slag increases with decreasing Q and suggested that control and adjustment of the slag basicity are very important for eliminating these components from the slag by means of volatilization. The log a versus

  • publication-2 - leovoisin

    Hence, in the present study, arsenic and antimony activities in these systems were measured by using an isothermal isopiestic method at 1150 ℃. Phase relations in the range of dilute arsenic and antimony in these systems were also studied at 1150 ℃ to determine tie-lines connecting between the Fe-Co solid solution and liquid phases.

  • Structural Destruction of As–Sb Solid Solution through a ...

    Correspondingly, the arsenic and antimony volatilization rates increased to 92.69% and decreased to 6.77% (Figure 6), respectively, when 5 mass % CaO was added. However, as the amount of CaO increased further, more Ca 3 (AsO 4) 2 was formed through eq 7

  • Immobilization of antimony waste slag by applying ...

    methods, a considerable amount of slag containing antimony and other impurities is formed in the equipment such as the shaft furnace, rotary kiln, converter, or reverberatory furnace. According to the antimony production companies, 1 ton of antimony production results in the generation of approximately 4.5–5 tons of waste slag.

  • Volatilization of arsenic(III, V), antimony(III, V), and ...

    Anal. Chem. All Publications/Website. OR SEARCH CITATIONS

  • METHOD FOR VITRIFICATION OF ARSENIC AND ANTIMONY -

    The method according to an embodiment of an aspect of the invention is described in relation to the flowchart of FIG. 1. Arsenic and antimony exist as thiosalts, i.e. thioarsenate (Na 3 AsS 4) or thiantimonate (Na 3 SbS 4) respectively, when crystallized from basic dissolution with sodium sulfide Na

  • method for antimony - MC World.INC

    Regarding of the detail condition, two kinds of techniques are usually adopted in producing manufactured sand, dry way and wet way. Both methods can produce high quality manufactured sand as concrete aggregate. Especially, the dry way can produce not only the manufactured sand used in SMA road surface, but also the powder used in asphalt concrete.

  • Thermodynamic and kinetics analysis of the sulfur-fixed ...

    antimony is stibnite (Sb 2 S 3) and jamesonite (Pb 4 FeSb 6 S 14) [3-5]. The traditional method for the production of antimony is volatilization smelting followed by reduction smelting [6-7], which consists of two steps: oxidative volatilization of Sb 2 S 3 and reducing smelting of Sb 2 O 3 [8-9]. The reduction smelting is relatively mature and ...

  • Volatilization Roasting Furnace Amspec

    China is the largest producer of antimony. Current estimates put China’s antimony output at 84% of the world’s total. This number signifies a return to the global dominance that China enjoyed over 100 years ago. In 1908-1914, over 80% of the antimony for use was from China. During the years 1922-1931, it accounted for 73%.

  • Antimony Gold Mine Process By

    Mining process antimony china . antimony mining methods process crusher antimony volatilization methods is a complete gold processing plant manufacturer in china . more. get price and support online; open pit antimony mining - mayukhportfolio. open pit antimony mining. . the past mining operation was carried out using open-pit techniques.

  • Volatility and Vapor Pressure Measurements of Antimony and ...

    ration method with a vertical volatilization chamber. It was found that the volatility of the antimony and arsenic components in each slag increases with decreasing Q and suggested that control and adjustment of the slag basicity are very important for eliminating these components from the slag by means of volatilization. The log a versus

  • Structural Destruction of As–Sb Solid Solution through a ...

    restricts the volatilization of arsenic, but promotes the volatilization of antimony as deduced from Figure 1,asa result of which the V a is only 70.47%, whereas the V s is up to 35.60% as shown in Figure 6. Based on the data shown in Figures 2 and 4, when CaO was added, the oxidation of free Sb 2 O 3 and the “Sb 2 O 3” component in (As, Sb ...

  • KINETICS OF STIBNITE (S b S ) OXIDATION AT ROASTING ...

    oxidation-volatilization of this mineral at roasting or higher temperatures. On this matter, Komorova et al. [4] studied the vaporization of several antimony containing compounds, among them synthetic Sb 2 S 3, in nitrogen atmosphere using the transportation method. They found that in the temperature range of 600 °C to 824 °C, Sb 2 S 3 ...

  • Full text of "Antimony Ores" - Internet Archive

    This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation

  • Senarmontite volatilization kinetics in nitrogen ...

    However, at high oxygen concentrations, the antimony volatilization was stopped by the formation of the non-volatile compound, SbO2. In highly oxidizing atmospheres, antimony volatilization took place only at high temperatures (above 1150 °C), where the SbO2 became an unstable compound and decomposed into SbO(g) and O2(g).

  • Microbial methylation and volatilization of arsenic - UBC ...

    The basis of the "Toxic Gas Hypothesis" of Sudden Infant Death Syndrome (SIDS) is that the microorganisms present on infants bedding materials volatilize sufficient arsenic, antimony or phosphorus from these materials to be acutely toxic to an infant. The volatilization of arsenic by aerobic microorganisms isolated from new sheepskin bedding materials, as well as from materials used by a ...

  • Separation behavior of arsenic and lead from antimony ...

    methods contains 0.02–1% As [1]. Even at the purity level of 99.8%, Sb still contains significant concen-trations of As (ca. 0.08 %) and Pb (ca. 0.12%). According to the state of the art, selective crystallization via zone refin-ing is reported to be an effective technique to produce high purity metals by keeping the impurities in the ...